I have just done this dumb thing... I was experimenting with a theme and it had the same name as another theme. So I didn't like the way things were going and deleted the one theme whose color I didn't like. Unfortunately, things did not default to the other theme with the same name. The blog simply disappeared. I can get into the control panel and see the other themes, and I think maybe the content is in there somewhere--I backed up my d-base anyway....but I cannot get into my blog at all to change themes and make anything come up again. I get a blank screen when I go to my site...Please tell me I am not the first stupid person ever to do this.